System Analysis and Design
HIPO

None of these
is a forms-driven technique in which standard forms are used to document the information
consists of a hierarchy chart and an associated set of input/process/ output charts
All of these
captures the essence of top down decomposition.

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System Analysis and Design
System prototyping helps the designer in

making the programmers understand how the system will function.
giving a demo of the software, to the system manager to whom he reports
all of the listed here
communicating to the user, quickly, how the system, when developed, will look like and get a feedback.

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